<div class="input-append date" id="<?php echo $this->attribs['id']; ?>" data-date-format="<?php echo $this->attribs['format']; ?>">
    <input name="<?php echo $this->name; ?>" class="span2" size="16" value="<?php echo $this->value; ?>" type="text" readonly="<?php echo $this->attribs['readonly']; ?>" />
    <span class="add-on"><i class="icon-calendar"></i></span>
</div>